Tropical Storm Isidore (1984)

Basin

North Atlantic

Dates

September 25, 1984 to October 1, 1984

Peak strength

Tropical Storm, 50 kt (58 mph)

Lowest pressure

999 mb (29.50 inHg)

Landfall

Yes

Accumulated cyclone energy

3.6

Fastest the center moved

24 kt (28 mph)

Identifier

AL151984

No source this site reads publishes a machine-readable casualty or damage figure for a storm of this era. The National Hurricane Center’s season tables begin in 1995 and carry deaths and damage only from 2005 in the Atlantic and 2020 in both basins; the US Storm Events record begins in 1996.

The Weather Prediction Center attributes 560 rain gauge totals over the contiguous United States to this storm. The wettest reached 8.90 inches (226 mm).

WPC’s storm rainfall file, 1900 to 2020, compiled by David Roth.

• Unnamed tropical depressionNorth Atlantic · 1984Tropical Depression30 kt
• Unnamed tropical depressionNorth Atlantic · 1984Tropical Depression30 kt
• Unnamed tropical depressionNorth Atlantic · 1984Tropical Depression30 kt
• Unnamed tropical depressionNorth Atlantic · 1984Tropical Depression30 kt
• Unnamed tropical stormNorth Atlantic · 1984Tropical Storm50 kt · 1000 mb
• Tropical Storm ArthurNorth Atlantic · 1984Tropical Storm45 kt · 1004 mb
• Tropical Storm BerthaNorth Atlantic · 1984Tropical Storm35 kt · 1007 mb
• Tropical Storm CesarNorth Atlantic · 1984Tropical Storm50 kt · 989 mb
• Unnamed tropical depressionNorth Atlantic · 1984Tropical Depression30 kt
• Hurricane DianaNorth Atlantic · 1984Cat 4115 kt · 949 mb
• Tropical Storm EdouardNorth Atlantic · 1984Tropical Storm55 kt · 998 mb
• Tropical Storm FranNorth Atlantic · 1984Tropical Storm55 kt · 994 mb
• Tropical Storm GustavNorth Atlantic · 1984Tropical Storm45 kt · 1006 mb
• Hurricane HortenseNorth Atlantic · 1984Cat 165 kt · 993 mb
• Hurricane JosephineNorth Atlantic · 1984Cat 290 kt · 965 mb
• Unnamed tropical depressionNorth Atlantic · 1984Tropical Depression30 kt
• Hurricane KlausNorth Atlantic · 1984Cat 180 kt · 971 mb
• Unnamed tropical depressionNorth Atlantic · 1984Tropical Depression30 kt
• Hurricane LiliNorth Atlantic · 1984Cat 170 kt · 980 mb

A best track is the record a warning agency settles on after the storm, not what it said at the time: position, maximum sustained wind and central pressure every six hours, revised against every observation that came in later. Category is the Saffir-Simpson scale, which runs from Category 1 at 64 kt to Category 5 at 137 kt and reads wind only, so it says nothing about surge or rain. Accumulated cyclone energy adds up the square of the wind through the storm's life, so it counts strength and duration together.

Storm history from NOAA NCEI’s International Best Track Archive for Climate Stewardship (IBTrACS), which merges the official best track of every warning agency. Live storms, cones, watches and warnings from the National Hurricane Center and the Central Pacific Hurricane Center. Archived radar from NOAA’s Level II archive.

The National Hurricane Center has published no tropical cyclone report for this storm.

• Wikipedia article: Tropical Storm Isidore